Trade-offs during the development of primary and secondary sexual traits in a horned beetle.
D000818:Animals; D005075:Biological Evolution; D001837:Body Weights and Measures; D001517:Coleoptera / Q000254:growth & development*; D018507:Gene Expression Regulation, Developmental; D005835:Genitalia / Q000254:growth & development; D006257:Head / Q000254:growth & development; D066298:In Vitro Techniques; D012727:Sex Characteristics